anyone have any connections to the bmw engine engineers who redesigned the engine? ANYONE? Lets try and dispell this myth whole heartedly.

 

Risk is perhaps one of the most difficult concepts to understand. For example, consider that smoking 'cannot possibly cause cancer' because hundreds of millions of people smoke, including probably hundreds of people on this very board! Yet I have never ever seen someone on this board complain that they died of cancer! Yep, not even once, though they should be dropping like flies if it were true. Even if they did develop cancer (engine blew up)... how would you prove it was the smoking (pulley) that did it hmm? However any life insurance salesman will be able to completely quantify the risk of smoking by looking it up in an actuary table. Even if you are not a believer, you cannot escape the reality that the bean counters have access to a lot more information than you do.

I'm afraid it would take a lot more than 200k miles to prove anything...

 

Some good reading here. http://www.metroplexmini.org/forum/s...ad.php?t=11540

The original Dinan article is in this thread as well, but the first article is interesting.

 

Smokings bad Mkay! and quite nasty, you'll never catch me doing that.

Pilo racing was working on a lightweight one with the dampener what ever happened with that?

 

So a conversation with an engineer who worked on the design of the exact engine in question with the specific question about the need for a crank pulley with an vibration dampening properties means nothing to you, yet reading different "papers" on the internet about the same topic as it relates to other types of engines means so much to you. Boy are you messed up. Why don't you contact some of the engineers yourself and report back. Someone has already done just that, yet you choose not to believe them. What evidence does it take, or are you so convinced that you are right that no evidence will convince you to the contrary?

-Keith

 

Whoaaa. I stopped by this thread Saturday to see what I could learn, and I felt like I had wandered into a bar fight.

Come by today, and the bar fight is still going on!

 

you'll find that the bar-fight keeps happening! No new ground here...

comes down to the theory of dampeners vs the particulars for our motor, with a little bit of accessory protection thrown into the mix. About time for the camps to settle down for a while, until someone else "discovers" that most of the lighter pullies don't have dampeners, and then they read the Dinan article (who deal with lots of BMW I6s) and then well be off to the races again.....

Matt

 

I don't know how many miles some of you guys have on your cars... but from my experiance with some minis around 100K miles... the supercharger usually fails... (ive always been told that these blowers will last about 100K mile and anything past that is considered luck...)

and the biggest failure of all was minicoop78's car... A ROD THROUGH THE BLOCK after having the alta pulley on his car for 3 or 4 months (i can't speak for him but i think it was that long) Keep in mind that his car had 100+ thousand miles on it before it let go. As far as mods on the car it didn't have a 19% pulley... it had a 17% Their was also no water involved when the engine let go... it just let go... after driving aggresivley and then driving normal... minicoop78 can correct me if i am wrong...

Randy, is their any particular reason why you are asking if their was a 19% pulley and the alta pulley on the car? is their an inherint problem with running this combo???

 

Please give specific info on cars that have had SC failures at around 100K miles.

 

what would you like to know...


they no longer created boost and sounded like they were coming apart... loud bang and grinding...

what specifics are you looking for???

 

I blew a charger at 50,000 kilometres. sounded like Isellem said, loud crunching/smashing metal sound and then loss of boost.


When I pulled it off the damage was suprisingly little compared to the sound but enough.

I was running a 19% but only for a couple of thousand soft k's, so I am not directly referring it to that, after fitting the new charger I realized the old one had been very noisy compared to the new one even before the pulley.

 

xtreem... was your car an 05? I doubt it since you have 50K K but ya never no.. these cars are meant to be driven! i have seen a couple other superchargers failing on completely stock 05's. I think they were built with an inherint problem/meaning that they just were not built properly from the factory.

 

No mine is a 10/02 and this was only 50,000 kilometres not miles

 

another thing no one is taking in the account is the possibilty of cross platform pre/mass-produced parts.

Meaning that, yes, its cheaper to make a 1lb piece over a 5lbs piece. HOWEVER, if 2 or 3 models of cars can use the same piece, and 2 of the 3 models need the heavier version and the 3rd can use the heavier version even though it may not need it, then they will use the mass produced part on all 3 vehicles to cut costs. Its doing nothing but saving money and over building. No harm in going to far.

 

Names of people with failed SC. How many?

 

Well, here it sits, mocking me incessantly for the past few days since this thread.. :impatient



At the beginning of the week it was such a happy looking pulley, but thanks to this thread, it's starting to look like an evil little piece of aluminum. I'm really wondering if it the right direction to go right now. I'm supposed to go in on Monday for the install - what's a guy to do???

-Justyn

 

three peoples cars supercharges have failed...

their names... not important, and i say that only because you aren't going to know them if i name them because they don't post on here or anything like that... not trying to be a jerk or keep these things hidden... i just dont feel the need to post their first and last names on the internet. Just kind of a privacy thing.

One i can tell you is minicoop78's supercharger did let go at about 98-100K miles. I can tell you this because he is my friend and i know he doesn't have a problem with me saying this...

hope that helps i don't know how knowing the specific names of people would help anymore than what i have already said

 

you dont want that dangerous piece of junk......sell it to me, i'll give ya like 25 bucks for it.

 

[QUOTE=SOCRATES]Well, here it sits, mocking me incessantly for the past few days since this thread.. :impatient
- what's a guy to do??? /[QUOTE]

Do what you feel is right. Right now I'm a bit scard, but it's just because of the dampener. I'm going to go talk with an enginers professor that I used to have in college and see what he says about this all. Maybe he can entrust some more skills or knowledge into me right now.

 

That will teach you to read these LONG threads with two opposite opinions

 

What? Instead of a Whalen?

 

you guys are crazy.

its just a motor, if it blows it blows. you put the pieces back together and fix it.

when modifying cars, these are some of the risks you have to take!


you didnt hear my dad bitching when parts from the valve train thew themselves thru the hood of a $60,000 muscle car. ratched and repainted hood, pulled motor and fixed all the damaged components and 3 weeks later it was back at the track!



if you really have to try and research every little thing you do you your car when trying to make gains like this, time to find another hobby!

 

are u g00d w/t00ls?
its not hard to install......mayb u can put it on and try it out till further research comes out!!
=0)

 

I am - but it's going in for the supercharger pulley at the same time, so they are basically installing it for nothing.

-J

 

You are correct. I will restate.
Call them 1,2,3 .....
Please give circumstances in which each SC failed.
Thanks